The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 2006
Filed:
Aug. 14, 2003
David A. Zaugg, Tucson, AZ (US);
Alphonso A. Samuel, Tucson, AZ (US);
Donald E. Waagen, Tucson, AZ (US);
Harry A. Schmitt, Tucson, AZ (US);
David A. Zaugg, Tucson, AZ (US);
Alphonso A. Samuel, Tucson, AZ (US);
Donald E. Waagen, Tucson, AZ (US);
Harry A. Schmitt, Tucson, AZ (US);
Raytheon Company, Waltham, MA (US);
Abstract
Systems and methods of tracking a beam-aspect target are provided. In embodiments, a target is tracked with a Kalman filter while detections are received. After a detection is missed, the Kalman filter may be concurrently propagated with a blind-zone particle filter until a probability that the target is in a blind zone exceeds a threshold. When the probability exceeds the threshold, the Kalman filter may refrain from further propagating. After a gated detection is received, the blind-zone particle filter and an unrestricted-zone particle filter may be concurrently propagated while a probability that the target is in an unrestricted zone exceeds a threshold. The system may return to tracking with the Kalman filter when a covariance of the unrestricted-zone particle filter falls below a predetermined covariance.